Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent
1986-07-17
1988-05-24
Moses, R. L.
Photocopying
Projection printing and copying cameras
Focus or magnification control
355 15, G03G 1500
Patent
active
047469579
ABSTRACT:
In a variable magnification copy machine in which a scanning velocity of a scanning device can be varied according to a designated magnification, and either a two revolution process or a three revolution process is utilized, there is provided a device for selecting the two revolution process when the equal magnification mode is selected and for switching from the two revolution process to the three revolution process when the enlargement mode is chosen. Even further, there are respective driving clutches corresponding to each of reduction, equal magnification and enlargement modes in which the copying speed is not slowed down in the enlargement mode by switching clutches upon returning the platen to a home position.
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Nishiyama Haruo
Tsuji Masaru
Moses R. L.
Sharp Kabushiki Kaisha
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